Aperture gauge for heavy duty vehicle brakes



FIG. 1 is a front elevational view of an aperture gauge for heavy duty vehicle brakes showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a side elevational view thereof;

FIG. 4 is a top plan view thereof. 

The ornamental design for an aperture gauge for heavy duty vehicle brakes. 